
https://publications.parliament.uk/pa/cm201719/cmselect/cmhaff/961/961.pdf

https://www.greatbritishpolitics.co.uk/europe/654-dual-nationality-and-the-hurdles-facing-britons-who-want-to-keep-eu-citizenship-after-brexit.html

http://www.euronews.com/2017/12/08/view-visegrad-nations-protect-the-eu-it-s-time-to-say-thanks-